import Vue from 'vue'
import Router from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
Vue.use(Router)

const router = new Router({
  routes: [
    {path: '/',redirect:'/login'},
    {path:'/login',component:Login},
    {path:'/home',component:Home}
  ]
  
})
//挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  //to 将要访问的路径
  //from 代表从哪个路径跳转而来
  //next 一个函数，表示放行
  // next() 放行  next('/login') 强制跳转

  if(to.path==='/login') return next();
  //获取token
  const tokenStr=window.sessionStorage.getItem('token');
  if(!tokenStr) return next('/login');
  next();
}
)
export default router
